Proof that there are lots of different opinions (see MD's good post, above).

Yes, IMO, but a filter is going to fail on time, not just on mileage. If you have low annual miles, do it every year as the book says. Doing it at 7500 can't hurt, doing it more often than that is a waste IMO. If you can get 15,000 miles accumulated in a year or so, you are likely driving on the highway a fair bit, easy miles.

The 15000 mile limit refers to the ability to still filter the oil and not get clogged. The one year recommendation refers to a filter maintaining its structural integrity and not collapsing. It isn't going to collapse at a year, but I wouldn't leave it in there for several years.

As is noted above, the biggest problem with long oil changes is not the long change interval, but the tendency of owners to not check the oil regularly. Checking it and keeping it topped up is more important than the change interval, within reason.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
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